17. Guang Wang, Xie-Gang Zhu, Yi-Yang Sun, Yao-Yi Li, Tong Zhang, Jing Wen, Xi Chen, Ke He, Li-Li Wang, Xu-Cun Ma, Jin-Feng Jia, Shengbai B. Zhang, Qi-Kun Xue, Topological insulator thin films of Bi2Te3 with controlled electronic structure, ADVANCED MATERIALS 23, 2929 (2011).